Displaced transcondy fx unsp humerus, subs for fx w nonunion

This code signifies a transcondylar fracture of the humerus that is displaced, meaning the bone fragments are not properly aligned. The "unspecified humerus" indicates that the laterality (left or right) is not documented. The "subsequent encounter for fracture with nonunion" specifies that this code is used when the patient is receiving ongoing treatment for a fracture that has failed to heal properly.

Use this code when a patient presents for follow-up care or treatment of a displaced transcondylar humerus fracture where the documentation clearly indicates nonunion. This applies to situations such as surgical intervention for nonunion, casting changes, or ongoing medical management for a fracture that has not united after the initial treatment phase.

• Ensure documentation explicitly states "nonunion" for this code to be appropriate.
• If laterality (left or right) is specified, a more specific code should be used.
• This code is for subsequent encounters, not the initial treatment of the fracture.